Just recently I've found out about this. Is this the biggest redpill ever?
https://en.wikipedia.org/wiki/Great_Stirrup_Controversy
Stirrup is a powerful tool
It alows a horseman to position himself more efficiently on the horse and to deliver more powerful blows
Speed/strength of the horse + strike of the horseman = medieval killing machine
>stirrups caused feudalism
At last, my bluepilled mind is set free
And Aquebuses ended feodalism